.pdf-space {
  height: 650vh;

  --card-label-bg: #e1e1f1;
  --text-block-width-mobile: 273px;
  --text-block-width-tablet: 292px;
  --text-block-width-desktop: 367px;

  /*
   * Stacking order within .pdf-space-stage (isolated stacking context):
   *   10  .adbe-logo-svg              — drawn-on background mark
   *   20  .text-block                  — marketing copy column
   *   30  .acrobat-title, .acrobat-cta — title + CTA chrome
   *   40  .acrobat-(mobile|desktop)-mockup — app-window chrome
   *   50  .card-scene                  — animated card layer (own context)
   *
   * Cards inside .card-scene are layered by JS (renderArcPeelToGrid):
   * fanIdx 0–7 → 0–7 at rest, 10–17 while peeling. These compete only
   * with each other inside the scene, never with the chrome above.
   */

  .pdf-space-stage {
    position: sticky;
    top: 0;
    overflow: hidden;
    width: 100%;
    height: 100vh;
    isolation: isolate;
  }

  .text-block {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 20;
    width: var(--text-block-width-mobile);
    text-align: left;
    will-change: transform, opacity;

    .heading {
      margin: 0 0 var(--s2a-spacing-xs);
      color: var(--s2a-color-gray-1000);
    }

    p {
      margin: 0 0 var(--s2a-spacing-sm);
      color: var(--s2a-color-transparent-black-64);
    }

    a {
      display: inline-flex;
      align-items: center;
      gap: var(--s2a-spacing-2xs);
      color: var(--s2a-color-gray-1000);
      text-decoration: none;
    }
  }

  canvas {
    position: absolute;
    inset: 0;
    mask-image: linear-gradient(to bottom, #000 0%, #000 82%, transparent 100%);
  }

  .adbe-logo-svg {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 10;
    width: 80vw;
    max-width: 900px;
    height: auto;
    opacity: var(--adbe-opacity, 0);
    transform: translate(-50%, -50%);
    pointer-events: none;
    will-change: opacity;

    path {
      fill: none;
      stroke: #e1e1ef;
      stroke-width: 1.5;
      vector-effect: non-scaling-stroke;
      stroke-dashoffset: calc(var(--adbe-logo-length) * (1 - var(--adbe-draw, 0)));
    }
  }

  .card-scene {
    position: absolute;
    inset: 0;
    z-index: 50;
    perspective: 900px;
    perspective-origin: 50% 50%;
    pointer-events: none;
  }

  .card-stack {
    position: absolute;
    inset: 0;
  }

  .acrobat-mobile-mockup {
    position: absolute;
    top: 0;
    left: calc((100% - var(--acrobat-mobile-mockup-width)) / 2);
    z-index: 40;
    overflow: hidden;
    width: var(--acrobat-mobile-mockup-width);
    height: var(--acrobat-mobile-mockup-height);
    border-radius: var(--s2a-border-radius-md);
    box-shadow: 0 40px 80px rgb(0 0 0 / 20%);
    transform: translateY(var(--mockup-y, 100vh)) scale(var(--mockup-scale, 2));
    will-change: transform;
    contain: layout style paint;

    picture,
    img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: fill;
    }
  }

  .acrobat-desktop-mockup {
    position: absolute;
    display: none;
    z-index: 40;
    overflow: hidden;
    aspect-ratio: 971 / 576;
    border-radius: 18px;
    box-shadow: 0 40px 80px rgb(0 0 0 / 20%);
    transform: translateY(var(--mockup-y, 150vh)) scale(var(--mockup-scale, 1.3));
    will-change: transform;
    contain: layout style paint;

    picture,
    img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: fill;
    }
  }

  .acrobat-desktop-panel {
    position: absolute;
    inset: 10px;
    display: none;
    flex-direction: row-reverse;
    align-items: flex-end;
    overflow: hidden;

    picture {
      box-sizing: border-box;
      transform: translateX(100%);
      will-change: transform;
      padding: 10px;
      width: auto;
      height: 95%;
    }
  }

  .card {
    position: absolute;
    top: 0;
    left: 0;
    width: 192px;
    height: 230px;
    overflow: hidden;
    border-radius: 10px;
    will-change: transform, opacity;
    contain: layout style;

    picture {
      position: absolute;
      inset: 0;
      display: block;
      width: 100%;
      height: 100%;

      img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
      }
    }
  }

  .card-label-outer,
  .no-motion-card-label {
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    padding: 5px 6px;
    white-space: nowrap;

    /* Deliberate one-off: card labels are 10px at every breakpoint */
    font-size: 0.625rem;
    font-weight: var(--s2a-font-weight-label);
    color: var(--s2a-color-gray-1000);
    background: var(--card-label-bg);
    border-radius: var(--s2a-border-radius-2);
  }

  .card-label-outer {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: top left;
    will-change: transform, opacity;
  }

  .acrobat-title {
    position: absolute;
    left: calc((100% - var(--acrobat-mobile-mockup-width)) / 2);
    z-index: 30;
    width: var(--acrobat-mobile-mockup-width);
    text-align: center;
    opacity: var(--title-opacity, 0);
    transform: translateY(var(--title-y, 100vh)) scale(var(--title-scale, 1));
    will-change: transform, opacity;

    .heading {
      margin-bottom: 6px;
      color: var(--s2a-color-gray-1000);
    }

    .subcopy {
      box-sizing: border-box;
      margin: 0 auto;
      max-width: 616px;
      padding-top: var(--s2a-spacing-xs);
      color: var(--s2a-color-gray-900);
    }
  }

  .acrobat-cta {
    position: absolute;
    left: 50%;
    z-index: 30;
    display: flex;
    background: var(--s2a-color-gray-1000);
    border-radius: var(--s2a-border-radius-round);
    transform: translateX(-50%) translateY(var(--cta-y, 100vh));
    will-change: transform;

    a {
      box-sizing: border-box;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 var(--s2a-spacing-lg);
      white-space: nowrap;
      color: var(--s2a-color-gray-25);
      text-decoration: none;
      border-radius: inherit;
    }
  }

  @media (width >= 768px) {
    --desktop-mockup-width: clamp(680px, 68.6vw, 971px);

    & {
      padding-bottom: 44px;
    }

    .text-block {
      width: var(--text-block-width-tablet);
    }

    .acrobat-mobile-mockup {
      display: none;
    }

    .acrobat-desktop-mockup {
      display: block;
      width: var(--desktop-mockup-width);
      left: calc((100vw - var(--desktop-mockup-width)) / 2);
    }

    .acrobat-desktop-panel {
      display: flex;
    }

    .acrobat-title {
      left: calc((100vw - var(--desktop-mockup-width)) / 2);
      width: var(--desktop-mockup-width);
      transform: translateY(var(--title-y, 150vh)) scale(var(--title-scale, 0.92));

      .heading {
        margin-bottom: 0;
        white-space: nowrap;
      }
    }

    .acrobat-cta {
      transform: translateX(-50%) translateY(var(--cta-y, 150vh));
    }
  }

  /* .acrobat-cta top is set by JS resize() for both desktop and tablet */

  @media (width >= 1280px) {
    --desktop-mockup-width: min(68.6vw, 971px);

    .text-block {
      width: var(--text-block-width-desktop);
    }
  }

  @media (width >= 1440px) {
    --desktop-mockup-width: min(68.6vw, 1200px);
  }

  &.no-motion {
    height: auto;

    .pdf-space-stage {
      position: static;
      height: auto;
      overflow: visible;
      isolation: auto;
    }

    .no-motion-grid-section,
    .no-motion-mockup-section {
      box-sizing: border-box;
      position: relative;
      margin: 0 auto;
      max-width: 1200px;
      padding: var(--s2a-spacing-80) var(--s2a-spacing-40) 0;
    }

    .no-motion-card-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      align-items: start;
      gap: var(--s2a-spacing-sm);
      margin-bottom: var(--s2a-spacing-xl);
    }

    .no-motion-card-desktop-only {
      display: none;
    }

    .no-motion-card {
      margin: 0;

      picture {
        display: block;
        width: 100%;
        overflow: hidden;
        border-radius: 10px;
      }

      img {
        display: block;
        width: 100%;
        height: 100%;
        border-radius: 10px;
        object-fit: cover;
      }
    }

    .no-motion-card-label {
      margin-top: var(--s2a-spacing-2xs);
    }

    .text-block,
    .acrobat-title,
    .acrobat-cta {
      position: static;
      transform: none;
      opacity: 1;
    }

    .text-block {
      width: 100%;
      max-width: var(--text-block-width-desktop);
    }

    .acrobat-title {
      width: 100%;
      text-align: center;
    }

    .acrobat-cta {
      width: fit-content;
      margin: var(--s2a-spacing-lg) auto 0;
    }

    .acrobat-mobile-mockup,
    .acrobat-desktop-mockup {
      position: relative;
      left: auto;
      margin: var(--s2a-spacing-lg) auto 0;
      transform: none;
    }

    .acrobat-mobile-mockup {
      display: block;
      width: var(--acrobat-mobile-mockup-width);
      height: var(--acrobat-mobile-mockup-height);
    }

    .acrobat-desktop-mockup {
      display: none;
      width: 100%;
      max-width: 1200px;
    }

    .acrobat-desktop-panel picture {
      transform: none;
    }

    .no-motion-slotted-card {
      position: absolute;
      overflow: hidden;
      border-radius: 6px;

      picture,
      img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
      }
    }

    @media (width >= 768px) {
      .no-motion-card-grid {
        grid-template-columns: repeat(4, 1fr);
      }

      .no-motion-card-desktop-only {
        display: block;
      }

      .acrobat-mobile-mockup {
        display: none;
      }

      .acrobat-desktop-mockup {
        display: block;
        margin-top: 40px;
      }
    }

    @media (width >= 1280px) {
      .no-motion-grid-section {
        padding: var(--s2a-spacing-124) var(--s2a-spacing-64) 0;
      }

      .text-block {
        margin-left: auto;
      }
    }
  }
}